rule out milk allergy or lactose intolerance both Nan pro and lactogen are same just brands and price difference if you can afford then Nan pro after ruling out any intolerance child is 2 months? if you are giving your feed, make sure you drink plenty of fluids and water warm water rub a mixture of Asfoetida powder with warm. water or ghee gently around belly button consult doctor get physically examined continue mother feed make sure baby latches properly ingesting air while milking if not latches properly may be a cause Make baby lie on stomach if he has achieved that milestone pouring little drop of castor oil in between hip helps soften stool